Black gel ink

Abstract

The invention discloses black gel ink. The black gel ink is prepared from, by weight, 38-42 parts of black dye, 9-12 parts of modified carbon black, 5-10 parts of polyoxyethylene ether, 3-9 parts of polyacrylamide, 15-28 parts of sodium polyacrylate, 7-16 parts of carboxymethyl chitosan, 3-11 parts of gelatin, 2-8 parts of polyvinyl alcohol, 3-10 parts of aluminium potassium sulfate, 1-4 parts ofcalcium powd, 10-20 parts of nano silicon dioxide, 5-17 parts of modified starch and 65-80 parts of deionized water. The black gel ink has the advantages that the viscosity is high, the problems of ink leakage, backflow, seepage and the like are solved, typical thixotropy is provided, the lubricity is good, coloring is firm, writing is smooth, high-temperature resistance is provided, the raw materials are poisonless and harmless, the black gel ink is safe and environmentally friendly, the substantial characteristics are outstanding, and the progress is obvious.

Description

technical field [0001] The invention specifically relates to a black neutral ink. Background technique [0002] The viscosity of neutral ink is between oily ballpoint pen ink and water-based ballpoint pen ink. Viscosity is the key factor affecting the quality of neutral ink. It has smooth writing, clear writing, good color sense, and writing is water-resistant, light-resistant, and long-lasting. And other characteristics, widely accepted and used by consumers. [0003] my country is the largest country in the production of neutral ink pens, but so far most of the ink used in neutral ink pens relies on imports. Although many companies are developing neutral inks, the quality of domestic neutral inks is not satisfactory. There are few varieties, and because the ink formula is unreasonable, the pseudoplasticity of the ink is poor, ink leakage, backflow, and water leakage occur when the viscosity is low, and there are shortcomings such as less ink output, poor lubricity, and ins...

AI Technical Summary

Problems solved by technology

[0003] my country is the largest country in the production of neutral ink pens, but so far most of the ink used in neutral ink pens relies on imports. Although many companies are developing neutral inks, the quality of domestic neutral inks is not satisfactory. There are few varieties, and because the ink formula is unreasonable, the pseudoplasticity of the ink is poor, ink leakage, backflow, and water leakage occur when the viscosity is low, and there are shortcomings such as less ink output, poor lubricity, and insufficient smooth writing when the viscosity is high.